19i Notes on North American Crustacea. 



gonia^ in its short rostrum and feet; from Podochela, in its 

 short feet, and its post-ocular process. 



Collodes g^ranosue, nov, sp. 



PI. II. fig. 4. 



Carapax nearly naked, conspicuously granulated, especially on the 

 branchial regions ; granules rather large and distinctly prominent. An 

 erect obtuse spine on the gastric region, one on the cardiac, and one on 

 the basal joint of the abdomen. The anterior half of the cardiac region 

 and the sulci or depressed parts of the carapax generally, are smooth and 

 glabrous. Rostrum subtriangular, fissured ; tip minutely bifid. A minuto 

 tooth on the superior arch of the orbit. Chelipeds weak. Ambulatory 

 feet rather depressed, ciliated, dactyli hairy. Margin of sternum raised 

 around the egg-cavity in the female, in which sex the abdomen is strongly 

 indurated, with the outer surface covered with closely-set granules. 



The only specimen in our possession is a female, in which the length 

 of the carapax is 0.36 ; the posterior breadth, 0.32 ; the length of the 

 first pair of ambulatory feet, 0.5 inch. 



Found at Cape St. Lucas, by Mr. Xantus. 



Podochela,* nov. gen. 



Carapax depressiis, elongato-triangulatus, antrorsum valde productus. 

 Rcgio gastrica angusta, tumida. Rostrum breve integrum, triangulatum 

 vel arcuatum. Oculi non retractiles, transversim porrecti, longe salientes. 

 Antennarum externarura articulus basalis angustus, medio longitudina- 

 liter sulcatus, apice angustatus simplex, dente non armatus ; pars mobilis 

 gracilis, aperta. Maxillipedum externorum merus quam ischium multo 

 brevior, plerumque eo quoque angustior, latitudine vero admodum vari- 

 abilis, apicibus obtusis vel productis, apice interno plus minusve incise ; 

 palpo prosarthroideo. Epistoma praslongum. Chelipedes mediocres; 

 mero curvato, marginibus ciliatis. Pedes prselongi, robusti vel graciles, 

 subprehensiles, manu sub-cheliformi plus minusve instructi interdum 



* Ilouf, pes ; %>7Xi7, chela. 



